The Probert Encyclopaedia of Science & Technology

OXYGEN

Oxygen is an element that is found free as a colourless, odourless, tasteless gas in the atmosphere, of which it constitutes 21%. It is found in water, most rocksand minerals, and in numerous compounds; it is capable of combining with all of the elements, except for the inert gases; it is active in physiological processes and especially in combustive processes. It has the symbol O.
Research Oxygen